Hope it helps:
–Egg
fertilized ONLY 1st 24 hrs
after ovulation
–Sperm
do not survive > 4 days in genital tract
–Ovulation
ALWAYS occurs 14 d before start of next menses
Fertile 18 days before time of shortest cycle and 11 days before longest (10-17 in 28 day cycle)
Fertile 18 days before time of shortest cycle and 11 days before longest (10-17 in 28 day cycle)